CN214043901U - Power battery module - Google Patents

Power battery module Download PDF

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Publication number
CN214043901U
CN214043901U CN202022737895.0U CN202022737895U CN214043901U CN 214043901 U CN214043901 U CN 214043901U CN 202022737895 U CN202022737895 U CN 202022737895U CN 214043901 U CN214043901 U CN 214043901U
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CN
China
Prior art keywords
busbar
circuit board
power battery
battery module
sampling circuit
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Active
Application number
CN202022737895.0U
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Chinese (zh)
Inventor
赵锡鹏
郭盛昌
肖人漳
易奎
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Chongqing Jinkang Power New Energy Co Ltd
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Chongqing Jinkang Power New Energy Co Ltd
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Priority to CN202022737895.0U priority Critical patent/CN214043901U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a power battery module, including electric core subassembly and busbar subassembly, the busbar subassembly with electric core subassembly electricity is connected, wherein: the bus bar assembly comprises a bus bar body and a sampling circuit board, wherein the sampling circuit board is electrically connected with the bus bar body and used for sampling each electric core of the electric core assembly, and the bus bar body and the sampling circuit board are contained in an encapsulation space. Compared with the prior art, the utility model discloses with the busbar body with the sampling circuit board is acceptd in an encapsulation space, constitutes an integrated module, has realized assembly process simplification, has practiced thrift the cost of labor.

Description

Power battery module
Technical Field
The utility model relates to an electric automobile power battery system, especially a power battery module.
Background
With the rapid development of electric vehicles, the requirements on the performance and safety of electric vehicles are also higher and higher. The power battery system is the heart of the electric automobile and is the focus of the research on the electric automobile. A power battery system for an electric automobile is generally formed by connecting a plurality of single batteries in series or in parallel in different modes and then fixing the single batteries.
The battery system is required to be light in weight, high in stability and high in grouping efficiency so as to improve the energy density of the battery. In addition, the battery system has compact structure and is essential for simplifying the module.
The mode of most adoption dispersion purchase among the technique is organized to current module, concentrated equipment, and the module contains both sides end plate, electric core, busbar, sampling pencil, support and constitutes. More parts are not easy to assemble.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power battery module to solve the more difficult assembly of spare part among the prior art, and assembly process is complicated, and the cost of labor is high, and the material is difficult to the technical problem of management and control.
The utility model provides a power battery module, including electric core subassembly and busbar subassembly, the busbar subassembly with electric core subassembly electricity is connected, wherein:
the bus bar assembly comprises a bus bar body and a sampling circuit board, wherein the sampling circuit board is electrically connected with the bus bar body and used for sampling each electric core of the electric core assembly, and the bus bar body and the sampling circuit board are contained in an encapsulation space.
The power battery module as described above, preferably, the busbar assembly further includes an upper film and a lower film, a bottom surface of the upper film and a top surface of the lower film are attached to form the packaging space, and the upper film, the sampling circuit board, the busbar body and the lower film are sequentially stacked and attached to each other.
The power battery module as described above, preferably, the busbar body includes a plurality of busbar units, a top surface of the busbar unit is recessed with a first groove, and opposite ends of the first groove extend to two side surfaces of the busbar unit.
Preferably, two first holes penetrate through the top surface of the busbar unit, and the two first holes are symmetrically arranged with the first groove as an axis.
The power battery module as described above, wherein, preferably, the sampling circuit board is made of FFC.
The power battery module as described above, wherein preferably, a first folded edge is formed at the edge of the upper film, and the first folded edge extends towards the direction of the lower film; and a second folded edge is formed at the edge of the lower film, the extending direction of the second folded edge is consistent with the extending direction of the first folded edge, and the second folded edge is matched with the first folded edge.
Preferably, a second groove penetrates through the first folding edge, and the second groove is used as a lead-out port for the sampling circuit board.
Preferably, a plurality of second holes are formed in the upper film and the lower film, and are used as welding windows.
Preferably, the sampling circuit board and the busbar body are connected by ultrasonic welding, conductive adhesive bonding, soldering or UV adhesive bonding.
Preferably, the upper film and the lower film are bonded and fixed by hot pressing or double-sided adhesive tape.
Compared with the prior art, the utility model discloses with the busbar body with the sampling circuit board is acceptd in an encapsulation space, constitutes an integrated module, has realized assembly process simplification, has practiced thrift the cost of labor.
Drawings
Fig. 1 is an isometric view of the present invention;
fig. 2 is an exploded view of the present invention.
Description of reference numerals: 1-busbar body, 2-sampling circuit board, 3-upper film, 4-lower film, 5-busbar unit, 6-first groove, 7-first hole, 8-first folded edge, 9-second folded edge, 10-second groove, 11-second hole, and 12-slave control board.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a power battery module, power battery module are applied to the new energy automobile field, specifically, including electric core subassembly (not shown) and busbar subassembly, electric core module includes a plurality of electric cores, and a plurality of electric cores set up side by side in proper order, the busbar subassembly set up in the tip of electric core subassembly and with electric core subassembly electricity is connected, and the effect of busbar subassembly is to link together a plurality of electric cores series connection or parallelly connected mode, and the conductor that is regarded as the electric current simultaneously passes the electric current to the power consumption part, wherein:
the busbar subassembly includes busbar body 1 and sampling circuit board 2, sampling circuit board 2 with 1 electricity of busbar body is connected for each electric core sampling to electric core subassembly, and with sampling data transmission to follow control panel 12, sampling circuit board 2 through the soldering with follow control panel 12 lug connection, reduce pencil in the battery package, realize reduce cost, weight reduction, busbar body 1 with sampling circuit board 2 is acceptd in a packaging space, constitutes an integrated module, has realized assembly process simplification, has practiced thrift the cost of labor.
Further, the busbar assembly further comprises an upper film 3 and a lower film 4, preferably, the upper film 3 and the lower film 4 are both horizontally extending plane structures, the upper film 3 and the lower film 4 are both PET or PC films, the bottom surface of the upper film 3 is attached to the top surface of the lower film 4 to form the packaging space, and the upper film 3 and the lower film 4 are attached and fixed in a hot pressing or double-sided adhesive manner.
The upper film 3, the sampling circuit board 2, the busbar body 1 and the lower film 4 are sequentially stacked and attached. Through the combination of the upper film 3 and the lower film 4, the problem of electric clearance between the bus bar body 1 and the sampling circuit board 2 is solved, and the overall insulation performance is improved.
Further, the busbar body 1 includes a plurality of busbar units 5, the busbar units 5 are conductive metal rectangular thin sheets, the top surface of the busbar unit 5 is concavely provided with a first groove 6, preferably, the first groove 6 is a strip-shaped groove, two opposite ends of the first groove 6 extend to two side surfaces of the busbar unit 5 to form openings, the first groove 6 is provided to prevent the electric core from contracting and expanding to generate stress in the charging and discharging processes, and the first groove is used as a stress buffer, and those skilled in the art can know that the specific structure, number and distribution of the first groove 6 can be specifically determined according to actual conditions, and the embodiment is not limited as long as the functional requirements can be met.
Further, two first holes 7 penetrate through the top surface of the busbar unit 5, the first holes 7 are symmetrically arranged by taking the first grooves 6 as axes, and the first holes 7 are used as observation positioning holes for position confirmation when the busbar main body and the battery cell pole are installed and automatic positioning of a full-automatic laser welding machine during welding. Those skilled in the art will appreciate that the specific structure, number and distribution of the first holes 7 may be determined according to the actual situation, and the embodiment is not limited as long as the functional requirements are met.
Further, the sampling circuit board 2 is manufactured by an FFC, and is mainly used for sampling the voltage and temperature of the power battery module, and transmitting the voltage and temperature of each battery cell to the slave control board 12. The FFC is short for a Flexible Flat Cable, and is named as a Flexible Flat Cable in Chinese; the FFC is a flat copper wire formed by pressing through an automatic equipment production line, and has the advantages of softness, free bending and folding, thin thickness, small volume, simple connection, convenience in disassembly, easiness in solving electromagnetic shielding (EMI) and the like.
Further, the edge of the upper film 3 is turned downwards to form a first folding edge 8, and the first folding edge 8 extends towards the direction of the lower film 4; first hem 8 is as installation location limit, can locate an border of going up membrane 3 and also can all do the hem with going up membrane 3 all around and handle, realizes X, Y orientation, increases this location limit and can prevent that the busbar subassembly from misplacing between installation and welding process electric core and busbar body 1 and leading to the short circuit to cause serious consequences such as explosion and fire.
Based on the fact that the single-layer film is not enough in edge folding strength, the upper and lower double-layer films are subjected to edge folding treatment at the same time, strength can be increased, and deformation can be avoided.
Furthermore, a second groove 10 penetrates through the first folding edge 8, the second groove 10 is a strip-shaped groove, the second groove 10 is used as a leading-out opening for the sampling circuit board 2, when the upper film 3 and the lower film 4 are hot-pressed or bonded together, a leading-out head of the sampling circuit board 2 extends out of the second groove 10 to be conveniently welded with the slave control board 12, and positioning in the X/Y/Z direction is achieved.
Further, a plurality of second holes 11 serving as welding windows are formed through each of the upper film 3 and the lower film 4. Go up membrane 3 and lower membrane 4 and press from both sides busbar body 1 and sampling circuit board 2 in the centre, through this welding window welding when electric core utmost point post and busbar body 1 welding, second hole 11 can be for circular also can be square or rectangle etc. according to the welding window of different welding demand design different shapes, convenient welding.
Further, still be equipped with total utmost point output copper aluminium mixed row location concave edge on the lower membrane 4, prevent total utmost point position deviation, lead to the module in the use total utmost point stress deformation, arouse the excess temperature risk.
Furthermore, the sampling circuit board 2 and the busbar body 1 are connected in an ultrasonic welding mode, a conductive adhesive bonding mode, a tin soldering mode or a UV (ultraviolet) adhesive bonding mode, and the reliability of the sampling loop is realized.
The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims (9)

1. The utility model provides a power battery module, includes electric core subassembly and busbar subassembly, the busbar subassembly with electric core subassembly electricity is connected, its characterized in that, wherein:
the bus bar assembly comprises a bus bar body and a sampling circuit board, the sampling circuit board is electrically connected with the bus bar body and is used for sampling each electric core of the electric core assembly, and the bus bar body and the sampling circuit board are accommodated in an encapsulation space;
the busbar subassembly still includes membrane and lower membrane, go up the bottom surface of membrane with the top surface laminating of membrane is in order to form down the encapsulation space mutually, go up the membrane the sampling circuit board the busbar body and the laminating setting is stacked gradually to the membrane down.
2. The power battery module as claimed in claim 1, wherein the busbar body comprises a plurality of busbar units, the top surfaces of the busbar units are recessed with first grooves, and opposite ends of the first grooves extend to two side surfaces of the busbar units.
3. The power battery module as claimed in claim 2, wherein two first holes penetrate through the top surface of the busbar unit, and the two first holes are symmetrically arranged with the first groove as an axis.
4. The power battery module of claim 1, wherein the sampling circuit board is fabricated from FFC.
5. The power battery module as claimed in claim 1, wherein the edge of the upper film is formed with a first folded edge extending in a direction toward the lower film; and a second folded edge is formed at the edge of the lower film, the extending direction of the second folded edge is consistent with the extending direction of the first folded edge, and the second folded edge is matched with the first folded edge.
6. The power battery module as claimed in claim 5, wherein a second groove penetrates through the first folding edge, and the second groove is used as a lead-out port for the sampling circuit board.
7. The power battery module as claimed in claim 1, wherein a plurality of second holes are formed through the upper membrane and the lower membrane for welding windows.
8. The power battery module as claimed in claim 1, wherein the sampling circuit board is connected with the busbar body by ultrasonic welding, conductive adhesive bonding, soldering or UV (ultraviolet) adhesive bonding.
9. The power battery module as claimed in claim 1, wherein the upper film and the lower film are bonded and fixed by hot pressing or double-sided adhesive tape.
CN202022737895.0U 2020-11-24 2020-11-24 Power battery module Active CN214043901U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022737895.0U CN214043901U (en) 2020-11-24 2020-11-24 Power battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022737895.0U CN214043901U (en) 2020-11-24 2020-11-24 Power battery module

Publications (1)

Publication Number Publication Date
CN214043901U true CN214043901U (en) 2021-08-24

Family

ID=77361544

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022737895.0U Active CN214043901U (en) 2020-11-24 2020-11-24 Power battery module

Country Status (1)

Country Link
CN (1) CN214043901U (en)

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